Peed mechanism fob the chemical tbsatment of water



W. I. DANAHO;

FEED MECHANISM FOR THE CHEMICAL TREATMENT OF WATER".

APPLICATION men FEB. 11, l9l9.

1318289. e un 6, 1922.

W. J. DANAHO. FEED MECHANTSM FOR THE CHEMICAL TREATMENT or WATER. APPLICATION FILED FEB. l7.-l91 9..

1,418,289. Patentedlune 6, 1922.

2 SHEETS-SHEET 2.

Y Wmzmm UNITED STATES PATENT QFFICE.

WILLIAM J. DANAHO, OF SPRAY, NORTH CAROLINA.

Application filed February 17, 1919.

T allot/m it may concern Be it known that 1, WILLIAM J. DANAHO, a citizen of the United States, and resident of Spray, county of Roclringham, State of North Carolina, have invented Feed Mechanism for the @hemical Treatment of ater, of which the following is a specification.

The object of the invention to provide a practical, effective and at the same time simple means for introducing purifying agents, usually having chemical ingredients and in liquid form, into water as it supplied by a pump, centrifugal or reciprocatory, to service lines or mains for city use, and other analogous purposes, and more especially it the object to provide n'iechanism for this general purpose, which shall depend upon the service water as the motive agent, and shall be regulated in the matter of speed at which the purifying agent is fed to the service water by the volumetric flow of the latter, under such arbitrarily adjustable control as may be necessary to insure, regardless of variations in volumetric flow, a predetermined proportionate amount of the agent to the water supplied.

lVith these and related objects in view,

the invention consists in the construction, combination and relation of elements, of which an illustrative embodiment is shown in the accompanying drawings, it being understood, however, that such mechanism, within the scope of the appended claims, is susceptible of numerous variations, in form, proportion and details, in adapting it to con ditions which are encountered in actual practice, without departing essentially from the principles involved.

In the drawings,

Figure 1 is a plan view of the apparatus as applied to a pump for supplying a city water main, or the equivalent thereof;

Figure 2 is a side view partly in section of the same;

Figure 3 is a detail sectional view of the controller, coi'isisting in this instance of apressure actuated valve operating means.

Fig. l is an enlarged detail section of the pressure actuated controller for the motor supply valve.

Essentially the apparatus consists of a delivery reservoir 10 from which lead the delivery conductors such as tubes 11 having their inlet ends permanently submerged in the liquid contents of the reservoir while their discharge ends communicate with the Specification of Letters Patent.

Patented June 6, 1922.

Serial No. 277,540.

servlce pipe supplied by the pump 12 so as to discharge into the service water impelled by the pump, a uniform head or column of hquld being preserved in the delivery reservoir by means of suitable mechanism such as a valve 13 actuated by a float 14,-; feeding means for transferring liquid purifying agent from a reserve or feed reservoir15 into the delivery reservoir and consisting for example of one or more dippers 16; devices for actuating said feeding means, operated preferably by the water flow through or from the pump and consisting as indicated of a motor 17 connected with a rock shaft 18 by which the clippers are supported; and a controller 19 consisting of a valve 20 or its equivalent disposed for actuation by a. diaphragm 21 which is exposed to fluid pressure at or near the pump through a pipe or like conductor 22.

as one of the simplest embodiments of the mechanisms indicated as essential to the apparatus there is shown a tank which is divided by suitable partition 24 to produce the compartments respectively representing the delivery and feed reservoirs 10 and 15. the latter being charged from any suitable source of supply through the pipe or pipes 25 ha ving valves 26 actuated by floats 27 so as to maintain a substantially uniform level of the liquid contents, and each dipper, of which any desired number may be employed is provided with a hollow stem forming a discharge 28 which is carried by the above noted rock shaft 18 and is attached to convey the liquid elevated by the dipper from the contents of the feed reservoir to the delivery reservoir, as the requirements of the apparatus may indicate. it desirable to maintain a substantially unform head or depth of liquid in the delivery reservoir so as to insure a substantiallv uniform discharge of such liquid through the delivery tube or tubes 11 to the service water, whether this discharge is effect d solely by gravity or is due to or incr ed by the suction of the pump as when su h delivery tube in connection with the inlet end of the pump as shown in the drawing, and, in order that no air may be drawn into the pump through the delivery tube, the inlet end of the latter is provided with a valve 13 as above noted, normally and yieldingly held from or unseated by a float 1 of which the arm 29 mounted upon a suitable bracket 80 is connected with the valve stem 31. At the same time it is preferred to limit the movement of the valve so that it is permanently maintained within the zone or range of suction at the inlet end of the delivery tube so that in the event that, for any reason, the screen or inlet of the pump supply conductor should become clogged or obstructed, the increased suction due to the action of the pump caused at the inlet end of the delivery tube will induce the seating of the valve so that an excessive amount of the'purifying agent may not be drawn into the pump and thus introdir-ed into the pump flow of service water.

simple and practical mounting of the delivery tube in the wall of the reservoir is indicated in the drawing, but obviously this is Sl jtCt to change to suit the conditions unde which the apparatus may be installed.

The rock shaft by which the feed dippers are carried is provided as shown with a crank arm 32 connected by a rod 33 or its equivalent with a similar arm 34 upon the basin 35 of the motor, adjustment of the extremities of said connecting rod with reference to the crank arms to vary the relative movement of the same being possible by reason of. the openings 36 and 37 with which said arms are provided for the reception of the connecting pins or studs 38 and 39.

The motor indicated in the drawing is of the rocking basin or trough type, having a fulcrum or rocking point 40 and an intermediate partition ll producing compartments 42 and a3 either of which may be disposed to receive the discharge from the motor supply pipe at. preferably in conneetion with the outlet of the pump so that the rapidity of movement of the water through and discharge from said motor supply pipe shall be directly proportionate to the volumetric discharge of. or flow through. the pump, to the end that the rapidity of movement of the motor, and hence of the feed from the reserve compartment 15 to the delivery reservoin shall be pro 'iortionate to the volumetric flow through the pump and hence of the passage of water through the service main. A stop valve -o may be provided in the motor supply pipe to completely interrupt the flow when desired and also in communication wit", said supply pipe there is arranged the controller for the abovementioned valve Qtl actuated bythe diaphragm 2]. which is subject to pump pressure if the conductor is in communication with the pump discharge in which event said conductor will be disposed in connection with the lower or inhercompartment of the diaphragm casing); .46 as shown in the drawing. (this arrangement. obviously. being subject to modification,) the tension of the diaphragm in resistance to the water pressure, tending to open the valve 20, being regulated by means of a spring 47, and an adjusting screw 48 secured at the desired adjustment by a lock nut 15). It will be obvious that the operation of the pump will by pressure serve through the diaphragm 21 to open the valve 20 for the passage of water through the supply pipe 44 to the pump, thus initiating the movement of the latter to actuate the feeding means to supply the agent to the delivery reservoir at a rate proportioned to the flow of water through the pump, the resistance offered ly the diaphragm under the selected adjustment of its tension serving to modify and regulate the flow through the supply pipe at different pump pressures, and thus to determine the relative speed of transfer of the purifying agent from the feed reservoir to the delivery reservoir, while at the same time the pump suction, when the delivery of the agent to the inlet end of the latter is adopted, will serve as a check to prevent the excessive introduction of the purifying agent into the service water in the event that there is any disturbance or modification of the normal working conditions of the parts.

Furthermore, it will be notecL that those elements of the mechanism including the reservoir, the check valve 13, delivery tubes, the floats, the pump, and other features em posed'to contact with the purifying agent should be of such material as not to be corroded thereby, as for example the reservoirs and motor may be of wood, the floats of glass in the form of hollow balls or globes, the valves, delivery tubes and dipper of copper, or the equivalent thereof.

It will be noted that the purifying chemicals or agents are separately fed to and from the distributing reservoirs, so as to be introduced separately to the pump-fed water and in the event that solid or undissolved particles carried by the liquid fed through the pipes so should clog the valves 26 the lowering of the level of liq id contents of the feed reservoir 15 will by the lowering of the float serve to widely open the valve and thus permit the accumulated particles to pass into the reservoir.

It is obvious. moreover, that the oscillatory movement of the dippers will serve to agitate the contents of the tank 15 and thus the valve 26 through the movement of the quantity ofthe'agent from the feed reservoir to the distributing reservoir, and in ad dition thereto the operation of the dipper insures the transfer, only, of liquid, or chemicals in solution to the distributing reservoir-any sediment, solids, or undissolved particles being left in the bottom of the feed reservoir. v

It will be noted that the rate at which the purifying agent should be fed to the service water conductor is in accordance with the volume of water passing through the conductor and hence the rapidity of movement and the degree of suction applied by the passing water to the outlet ends of the conveyor tubes for the agent; but in order that a uniform ratio may be maintained,'-that is between the volume of service water and the quantity of the agent, it is desirable to eliminate or minimize the obstructive effect or neutralizing influence of other forces tending to interfere with the suctional feeding of the agent, and therefore the hydrostatic pressure in the service conductor is opposed, with a view to establishing or approaching a balance, by creating a hydrostatic pressure in the conveyer for the purifying agent, with a head (determined by the depth of liquid in the reservoir 10) which is variable with the pressure in the conductor owing to the control of the stroke of the tilting motor through the pressure actuated valve or controller 19. As the hydrostatic pressure increases in the conductor the speed of the motor is accelerated to raise the head in the reservoir 10 and thus oppose the increased pressure in the conductor by an increased pressure in the conveyors for the purifying agent, to the end that uniformity in the rate of supply of the agent to the service water may be maintained while utilining the service water in the conductor as the means of feeding the chemical agent thereto through the suction induced at the discharge end of the c'onveyor.

l Jhat is claimed is:

1. Mechanism for supplying a purifying agent to a service water conductor, having a conveyor for the agent which is subjected in the direction of its discharge to hydrostatic pressure to oppose and substantially neutralize the hydrostatic pressure in the conductor,thereby establishing a substantial balance thereof, and means controlled by the flow of liquid through the conductor for maintaining the hydrostatic head.

2. Mechanism for supplying a purifying agent to a service waterconductor, having a conveyor for the agent which is subjected in the direction of its discharge to hydrostatic pressure to oppose and substantially neutralize the hydrostatic pressure in the conductor and thereby establishing a substantial balance thereof, and means controlled by and variable with the flow of liquid through the conductor for maintaining the hydrostatic head providing a pressure at a substantially constant ratio with that in the conductor.

lviechanism. for supplying a liquid puri tying agent to a service water conductor, having a conveyor for the agent fed under a hydrostatic pressure in opposition to that n the conductor. said conveyor being exposed at its discharge end to suction within the conductor, and a cutoff valve for the conveyor movable towards its seat under the pressure of flow of the agent through the conveyor and yieldingly held unseated in opposition to a normal pressure of said flow.

lrlechanism for supplying a liquid purifying agent to a service water conductor, having a conveyor for the agent fed by hydrostatic pressure and exposed at its discharge end to suction within the conductor, and a. yield'ingly supported cut-off valve for the conveyor, seatable in the direction of feed therethrough and exposed to the influence of suction at the discharge end thereof.

5. Mechanism for supplying a liquid purifying agent to a service water conductor in an amount bearing a constant ratio to a variable volumetric flow through the conductor, having a reservoir for the agent, a discharge tube leading from the reservoir to the conductor, and means actuable by the flow through the conductor for maintaining a constant hydrostatic head in the reservoir.

6. Mechanism for supplying a purifyin' agent to a service water main, having a res ervoir, a delivery tube for the reservoir e}:- posed to suction in the main, and a tube closing valve provided with an actuating float supported by the liquid contents of the reservoir for maintaining a substantially i'iniform. head above the inlet end of the delivery tube.

7. Mechanism for supplying a purifying agent to a water system main having a reservoir for the agent and a delivery tube having its discharge end exposed to suction in the main and its inlet end submerged in the contents of the reservoir, a float controlled valve for the delivery tube, and means controlled by the volumetric flow through the main for maintaining a uniform head of the agent in the reservoir.

8. Mechanism for supplying a purifying agent to a water system conductor having a reservoir for the agent. and delivery tube with its discharge end exposed to suction in the conductor. and its inlet end perinanently submerged in the contents of the res ervoir, a float controlled valve for the delivery tube and means controlled by the volumetric flow through the pump for maintaining a substantially uniform hydrostatic head of the agent in the reservoir, the valve being exposed to and movable toward its seat by suction in the tube.

9. Mechanism for supplying a purifying agent to a system conductor having a reservoir the agent and a delivery tube leading from the reservoir to the conductor, a second reservoir, dippers for transferring the agent from the second to the irstnamed reservoir to maintain a constant hydrostatic head iii-the latter and means actuated by pump discharge for operating the dippers.

10. ivlechanism for supplying a purifying agent to a water stem conductor having a delivery reservoir and a delivery tube leading from said reservoir to the conductor carried column of water, a feed reservoir, dippers for transferring the agent-from the feed reservoir to the delivery reservoir, said clippers having tubular discharge stems, a rock shaft carrying said dipper stems for tilting movement and means actuated by flow through the conductor for operating the rock shaft.

11. Mechanism for supplying a purifying agent to a water conductor, which consists in a reservoir and means for delivering the agent therefrom to the conductor, means for feeding the purifying agent to the reservoir, a water motor actuated by flow through the conductor to operate the said feeding means, and a pressure actuated controller exposed to pressure in the conductor for regulating the How to the motor.

12. Mechanism for supplying a purifying agent to a water system conductor which consists in a reservoir and means for delivering the agent therefrom to the conductor, and means for feeding the purifying agent to the reservoir, a tilting water motor operatively connected with said feeding; means. and having compartments for alternately receiving water from the conductor and a controller actuated by pressure in the conductor for regulating the passage of water from the conductor to said motor.

13. Mechanism for supplying purifying agent to a water system main, which consists in a reservoir and means for delivering the agent therefrom to the water in the main, means for feeding the purifying agent to the reservoir, a water motor for actuating the feed means and having a water supply conductor in connection with the main. and a valve for said conductor having an actuating diaphragm exposed to water pressure in the main.

14. The mechanism for supplying a purifying agent to service water which consists in a eed reservoir to which the agent is supplied, distributing means for conveying the agent to the service water. a motor actuated by service water. and a dipper of a definite capacity. operated by the motor, for transferring the agent from the feed reservoir to said distributing means.

15. Mechanism for supplying a purifying agent to pump fed service water which consists in a feed reservoir to which the '"agent supplied, distributing means for conveying the agent to the pump fed water, a motor actuated by pump-fed water, and a dipper of a definite capacity, operated by and in timed reiation to the motor for transferring the agent from the feed reservoir to said di ibuting means.

l6. Mechanism for supplying a purifying agent to service wat which consists in a feed reservoir to which the agent is supplied, distributingmeans for conveyingthe agent to the service water. a motor actuated by service water, and an oscillatory agitator for the contents of said reservoir actuated l;. v said motor, and consisting of a dipper for transferring the agent from the reservoir to the distributing means.

1. Mechanism for supplying a purifying agent to service water which consists in a feed reservoir to which the agent is supplied, distributing means for conveyingthe agent to the water, an oscillatory agitator for the contents of said reservoir consisting of a dipper for transferring the agent therefrom to the distributing means, and a water actuated motor connected with the dipper and lia -ring an operating capacity of a definite ratio to that of said dipper.

l8. Mechanism for supplying purifying agent to service water which consists in a f ed reservoir, valve-controlled supply means for the reservoir. distributing means for conveying the agent to the service water. motor actuated agitating means for transferring agent from the feed reservoir to the distributing means, and float controlled valve actuating means for the supply. to maintain a constant level in the reservou'.

i9. h lechanism for supplying a purifying nt to service water which consists in a eed reservoir, a supply valve for the same, distributing means for conveying the agent to the service water, an oscillatory dipper ferring agent from said reservoir ributing means, a dipper actuating motor operated by service water, and a supply valve operating float actuated by the. contents of the reservoir.

20. hlechanism for supplying a purifying agent to service water which consists in a feed reservoir to which the agent is supplied. distributing means to deliver the agent to the service water. a dipper for transferring liquid from an intermediate depth of the reservoir to the distributing means, and dipper operating devices.

Mechanism for supplying a purifying agent to service water which consists in a feed reservoir to which the agent is supplied, distributing means to deliver the agent to the service water, a dipper for transferring liquid from an intermediate depth of the reservoir to the distributing means and dipper operating devices, actuated by and proportionately to the How of service Water.

Mechanism for supplying a purifying agent to service Water, which consists in a feed reservoir to which the agent is supplied, distributing means to deliver the agent to the service Water, a dipper for transferring liquid from an intermediate depth of the reservoir to the distributing means, a sup- 10 ply controlling valve having an actuating float supported by the liquid contents of said reservoir and dipper operating devices.

In testimony whereof I afiix my signature.

WILLIAM J. DANAI-IO. 

